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Pig Trap

Pig Trap news and technical articles from Oil & Gas Journal. Search Pig Trap latest and archived news and articles

  1. North Sea Pipelines-1: Extensive subsea commissioning, pigging pose challenges

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    Mon, 21 Nov 2005

    … received in a 28-in. retrievable pig trap . Operations pigs would have to perform ..... can be justified, and then a subsea pig trap solution is used. Such pig traps ..... discharge should be out of the open pig trap door in the downstream end of the …

  2. Subsea isolation techniques advance

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    Mon, 1 Feb 2010

    … following elements: • Custom-designed pig trap and pigging spread. • High-friction ..... through the riser (Fig. 4). A pig trap and pigging pump launched the high ..... recovered all pigs in the temporary pig trap and closed the ESDV and new valve …

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  1. Pigging
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  5. Chemical Injection
  6. Co2 Pipeline
  1. REFINERY GASES—1: Hydrogen, nitrogen assist compliance with new, tougher environmental regs

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    Mon, 23 Nov 2009

    … undesired moisture content, contamination of products by residues of the blasting abrasives and environmental problems. A pig trap and nitrogen injection point was installed for this pipeline restoration at Rongellen, Switzerland (Fig. 7) CryoClean …

  2. Pressure isolation facilitates onshore, offshore maintenance

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    Mon, 2 Nov 2009

    … for safe isolation procedures before beginning work on existing infrastructure.4 Initial onshore use of the tool for a pig trap isolation on Vebundnetz Gas Aktiengesellschaft (VNG) roughly 7,000 km natural gas transmission grid in eastern Germany …

  3. Methods help remove black powder from gas pipelines

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    Mon, 12 Mar 2007

    … using the same pig with new caps and gauge plate. The pig trap this time caught 1,600 kg of black powder and the pig ..... back under way required venting gas with powder from the pig trap , creating a sufficient pressure drop across the pig to …

  5. North Sea Pipelines- Conclusion: Dual-diameter pigging reaches new extremes; Langeled looms

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    Mon, 28 Nov 2005

    … and gauging, hydrotesting, dewatering with air, drying with air, nitrogen purging, and gas filling. A temporary pig trap will be included at the subsea valve station at Sleipner. LLS will be operational, transporting sales gas, prior to …

  6. EPNG fined $15.5 million; pipeline rehab ordered

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    Mon, 30 Jul 2007

    … cleaning pigs on the system. -- Collect and analyze liquid samples for corrosive properties whenever a pipeline, vessel, pig trap , meter tube, or tank is opened on the system. -- Comply with gas quality guidelines that require monitoring of potentially …

  7. DRA for gas pipelining successful in Gulf of Mexico trial

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    Mon, 5 Jun 2000

    … the MO 863A separator and incoming pig trap to determine when the diesel and pig ..... limited by the holding capacity of the pig trap . It would have been better to run ..... form a true batch treatment, but the pig trap was not set up to do that. The same …

  8. INDUSTRY BRIEFS

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    Mon, 5 Oct 1998

    … Petroleum Co. Norway under its Ekofisk redevelopment program (OGJ, Sept. 7, 1998, p. 32). The platform served as a pig trap and metering point for gas being exported to Emden, Germany. Statoil said abandoning 2/4-S will trim 30 million …

  9. European pipeline spills down in 1995

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    Mon, 19 May 1997

    … gross 280 cu m of naphtha) was caused by mechanical failure in the form of an incorrectly manufactured modification to a pig trap . About 71% of the spillage was recovered. Cleanup took 15 days and was estimated at $1.5 million. Copyright 1997 …

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